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Finding the Fourth Proportional to 160,699.77, 221,742.36 and 89,079.78

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Solution

The fourth proportional to 160,699.77, 221,742.36 and 89,079.78 is: 122,917.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,699.77 : 221,742.36 = 89,079.78 : x
  2. Step 2: Convert to fraction form
    160,699.77/221,742.36 = 89,079.78/x
  3. Step 3: Cross multiply
    160,699.77x = 221,742.36 × 89,079.78
  4. Step 4: Simplify right side
    160,699.77x = 19,752,760,645.48
  5. Step 5: Solve for x
    x = 19,752,760,645.48/160,699.77
  6. Step 6: Final answer
    x = 122,917.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.